Analysis

  • max time kernel
    149s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2022, 13:12

General

  • Target

    28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe

  • Size

    412KB

  • MD5

    a168adfda6b1d8c177cfd64935307c90

  • SHA1

    b0e445cf99865be91b7e06e4318dc93ea8273006

  • SHA256

    28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f

  • SHA512

    e8ea8df9ca5463ebd20c038cb9a41361bfb8cd89dfb86eb7829531297dec22584f90cf1dcbed2ac17d06815d2df61115d1dcf27de6f3bd7e45a4720e4c1f1629

  • SSDEEP

    12288:tpbMsENIxDY8IdxXu3yjJnCBPho9fW5DE:tF0DXu35CW5DE

Malware Config

Extracted

Family

cybergate

Version

2.6

Botnet

02062010

C2

jackbush.no-ip.biz:81

Mutex

AdobeAcrobat7

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./log_rat/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    MSOffice

  • install_file

    update.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    texto da mensagem

  • message_box_title

    título da mensagem

  • password

    smalllulu

  • regkey_hkcu

    AdobeAcrobat6

  • regkey_hklm

    AdobeAcrobat5

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe
    "C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2620
    • C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe
      "C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe"
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe
        "C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe"
        3⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1240
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
            PID:5108
          • C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe
            "C:\Users\Admin\AppData\Local\Temp\28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f.exe"
            4⤵
            • Checks computer location settings
            • Drops file in System32 directory
            • Modifies registry class
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4936
            • C:\Windows\SysWOW64\MSOffice\update.exe
              "C:\Windows\system32\MSOffice\update.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              PID:2328
              • C:\Windows\SysWOW64\MSOffice\update.exe
                "C:\Windows\SysWOW64\MSOffice\update.exe"
                6⤵
                • Executes dropped EXE
                • Writes to the Master Boot Record (MBR)
                • Suspicious use of SetThreadContext
                • Suspicious use of SetWindowsHookEx
                PID:4072
                • C:\Windows\SysWOW64\MSOffice\update.exe
                  "C:\Windows\SysWOW64\MSOffice\update.exe"
                  7⤵
                  • Executes dropped EXE
                  PID:4056
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 532
                    8⤵
                    • Program crash
                    PID:3564
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4056 -ip 4056
      1⤵
        PID:3768

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\XX--XX--XX.txt

              Filesize

              230KB

              MD5

              941d8180caff4ea03281a0ce80c1b18a

              SHA1

              fd3cb7f5bbf3e7a62af95dddf95f336d8bc47621

              SHA256

              7fc43ec8b36d16bb38720e7f7f4f1f0af1c6928d579835242ad312c0d7751e8b

              SHA512

              a71b8815eedabd53ae704bd38e49062a14b27949c6f0d319a0de81d0ee60449bcbac9a35a5a5c44bec89600de2e95aad191367a53d43e50d85648274f82ccaa5

            • C:\Windows\SysWOW64\MSOffice\update.exe

              Filesize

              412KB

              MD5

              a168adfda6b1d8c177cfd64935307c90

              SHA1

              b0e445cf99865be91b7e06e4318dc93ea8273006

              SHA256

              28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f

              SHA512

              e8ea8df9ca5463ebd20c038cb9a41361bfb8cd89dfb86eb7829531297dec22584f90cf1dcbed2ac17d06815d2df61115d1dcf27de6f3bd7e45a4720e4c1f1629

            • C:\Windows\SysWOW64\MSOffice\update.exe

              Filesize

              412KB

              MD5

              a168adfda6b1d8c177cfd64935307c90

              SHA1

              b0e445cf99865be91b7e06e4318dc93ea8273006

              SHA256

              28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f

              SHA512

              e8ea8df9ca5463ebd20c038cb9a41361bfb8cd89dfb86eb7829531297dec22584f90cf1dcbed2ac17d06815d2df61115d1dcf27de6f3bd7e45a4720e4c1f1629

            • C:\Windows\SysWOW64\MSOffice\update.exe

              Filesize

              412KB

              MD5

              a168adfda6b1d8c177cfd64935307c90

              SHA1

              b0e445cf99865be91b7e06e4318dc93ea8273006

              SHA256

              28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f

              SHA512

              e8ea8df9ca5463ebd20c038cb9a41361bfb8cd89dfb86eb7829531297dec22584f90cf1dcbed2ac17d06815d2df61115d1dcf27de6f3bd7e45a4720e4c1f1629

            • C:\Windows\SysWOW64\MSOffice\update.exe

              Filesize

              412KB

              MD5

              a168adfda6b1d8c177cfd64935307c90

              SHA1

              b0e445cf99865be91b7e06e4318dc93ea8273006

              SHA256

              28d0f0c637b33ca480c055fc035e600660bedd0c8504ac8889e3d040682fe07f

              SHA512

              e8ea8df9ca5463ebd20c038cb9a41361bfb8cd89dfb86eb7829531297dec22584f90cf1dcbed2ac17d06815d2df61115d1dcf27de6f3bd7e45a4720e4c1f1629

            • memory/1240-157-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/1240-144-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/1240-143-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/1240-146-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/1240-148-0x0000000024010000-0x0000000024072000-memory.dmp

              Filesize

              392KB

            • memory/1240-142-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/1240-153-0x0000000024080000-0x00000000240E2000-memory.dmp

              Filesize

              392KB

            • memory/1380-145-0x0000000000400000-0x0000000000455000-memory.dmp

              Filesize

              340KB

            • memory/1380-136-0x0000000000400000-0x0000000000455000-memory.dmp

              Filesize

              340KB

            • memory/2328-171-0x0000000000400000-0x000000000047A000-memory.dmp

              Filesize

              488KB

            • memory/2620-134-0x0000000000400000-0x000000000047A000-memory.dmp

              Filesize

              488KB

            • memory/2620-139-0x0000000000400000-0x000000000047A000-memory.dmp

              Filesize

              488KB

            • memory/4056-180-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/4056-178-0x0000000000400000-0x0000000000450000-memory.dmp

              Filesize

              320KB

            • memory/4072-173-0x0000000000400000-0x0000000000455000-memory.dmp

              Filesize

              340KB

            • memory/4072-179-0x0000000000400000-0x0000000000455000-memory.dmp

              Filesize

              340KB

            • memory/4936-156-0x0000000024080000-0x00000000240E2000-memory.dmp

              Filesize

              392KB

            • memory/4936-159-0x0000000024080000-0x00000000240E2000-memory.dmp

              Filesize

              392KB

            • memory/4936-158-0x0000000000400000-0x000000000047A000-memory.dmp

              Filesize

              488KB

            • memory/4936-181-0x0000000024080000-0x00000000240E2000-memory.dmp

              Filesize

              392KB